"I've been thinking about skit ideas for a long time," Swift, 19, says of her SNL stint. "There are definitely some hilarious things that have happened to me over the past couple of months that I think will be pretty substantial skits."

"Of course, I've been such a fan for a long time, but I've gone back and re-watched everything over the past couple of months and digital shorts would be so much fun to do, because they've been done so well," she says. "Andy Samberg is hilarious."

In addition to SNL, Swift will perform on Dancing With the Stars Oct. 27.